Petaluma, California 

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Climate in Petaluma, California

Petaluma, California gets 30 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Petaluma averages 0 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 260 sunny days per year in Petaluma. The US average is 205 sunny days.

Petaluma gets some kind of precipitation, on average, 75 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.


Weather Highlights

Summer High: the July high is around 84 degrees
Winter Low: the January low is 39
Rain: averages 30 inches of rain a year
Snow: averages 0 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for Petaluma is 8.4 (10=best), which means it is more comfortable than most places in California.

8.4 / 10
June, August and July are the most pleasant months in Petaluma, while January and December are the least comfortable months.

Climate Averages
  Petaluma, CaliforniaUnited States
  29.8 in.38.1 in.
  0.0 in.27.8 in.
  74.8 days106.2 days
  260 days205 days
  83.7°85.8°
  38.7°21.7°
  8.47
  4.94.3
  30 ft.2443 ft.
CLIMATE

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.


August is the hottest month for Petaluma with an average high temperature of 83.7°, which ranks it as cooler than most places in California. In Petaluma, there are 6 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Petaluma are October, June and May.


December has the coldest nighttime temperatures for Petaluma with an average of 38.3°. This is about average compared to other places in California.


In Petaluma, there are 28.1 days annually when the high temperature is over 90°, which is cooler than most places in California.


In Petaluma, there are 16.7 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in California.


In Petaluma, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in California.


December is the wettest month in Petaluma with 5.7 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 57% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 29.8 inches in Petaluma means that it is wetter than most places in California.


January is the rainiest month in Petaluma with 12.5 days of rain, and July is the driest month with only 0.2 rainy days. There are 74.8 rainy days annually in Petaluma, which is rainier than most places in California. The rainiest season is Spring when it rains 49% of the time and the driest is Autumn with only a 2% chance of a rainy day.


There is rarely any recorded snowfall in Petaluma, ranking it as one of the least snowy places in California. Any measurable snowfall is a rare occurance in Petaluma.





CLIMATE MAP
  • Annual Rainfall (US Avg: 36.5")
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    Reviews for Petaluma    12 Reviews
    Just say no. - 11/3/2019
    We moved to Petaluma from Florida 5 years ago because my husband is from the area and has a lot of contacts in his industry. First, Petaluma is a quaint little town but... Read More

    Start Your Review of Petaluma


    Nice town, terrible traffic and road conditions - 6/8/2019
    Petaluma gets four stars for several reasons. The great bars and restaurants, the neighborhoods, the weather, which is the best in Sonoma County, but in regards to... Read More

    Nice but un Safe - 4/3/2017
    Very nice city but unsafe. For example we all eat at El Dorado Mexican Grill taco truck and the owner Saul Vega Robles is a DEA fugitive for over 10 years and an illegal... Read More


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    ZIP CODES IN PETALUMA, CALIFORNIA
    94954 94952

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